Hi,
The reason I like the Nexus 5x is firstly is that its a nexus i.e. It has pure android experience. Its manufactured by LG which itself makes class products. It has a perfect screen size that is neither too large or nor too small. Its c-type charging port charges up really fast and above all the Nexus phones will receive updates faster than other non-Nexus phones. These are the only reasons for which I personally like the Nexus 5x, no other reasons.